Over the past few years, AT&T has gotten a bit of a bad reputation for their network, and Verizon's reaped the benefits. It isn't quite that simple, though. Here's a quick rundown of the differences between Verizon and AT&T's 3G networks.

While many of you may be aware of some, if not all, of the differences between Verizon's CDMA technology and AT&T's GSM/UTMS, they're things that the average cell phone consumer may not know—especially if they've only ever used one network. So before you or all your less tech-savvy relatives rush to switch to Verizon after yesterday's announcement, you may want to go over some of these points (courtesy of Mashable):

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GSM and UMTS technology is widely used worldwide. UMTS phones can be easily moved from one UMTS network to another, making them ideal for international use.

[CDMA] can't use a SIM card, making it far more difficult to switch handsets.

Calls: In general, Verizon will drop less calls. It's unclear what impact the iPhone will have on its network, but we don't expect it to be as bad as AT&T was in its early years. Verizon's network has proven itself to be more robust.

Speed: In general, AT&T has the faster 3G network, and in some cases it's a great deal faster than Verizon.

Simultaneous voice and data: Only AT&T is capable of talking on the phone and surfing the web at the same time, but Verizon is working on a solution, saying the fix might be implemented by the end of this year.

We've also noted in the past that GSM might be a bit more battery-friendly, too. It's also worth noting that while Verizon's known for having better coverage overall, AT&T may still have better coverage in specific areas. If you don't travel a lot and AT&T has better coverage in your hometown, it may be worth it to stick with them instead.

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A lot of this will change in the future, as CDMA works on a solution to the simultaneous voice and data problem, and as both networks start using the same LTE technology for 4G. But, if you're thinking of switching to the Verizon iPhone now, these are some good things to keep in mind. Mashable goes into a bit more detail than that about how CDMA and GSM work, so if you're interested in the nitty gritty details, definitely hit the link to read more.